QUESTIONNAIRE EXPLANATION FOR INTERVIEWING IN VIETNAM AND THAILAND (Consistency in data for analysis)
VARIABLE 
EXPLANATION 
Index
Ordinal number
Nat
Nation (TH/VN)
Code
Identified code within each country
Lang
Original Interview Language 
Green space importance (5 points scale)
Park
Urban Public Park
Street
Street tree
Residential
Landscape around buildings/ Tree in residential area
Garden
Private garden at each household
Rooftop
Vegetation on building roof as a type of Green Infrastructure
Recreation
Tree in designated recreation sites (Zoo, amusement park)
Nature 
Wild vegetation (Wetland along riverbank, overgrowth plants, grassland)
Market
Market sells ornamental plant/ decorative plant (Thailand only)
Visiting Information 
Distance
Travel distance to visit the nearest public park
Frequency
Frequency of visiting public park for outdoor activities
Transportation
Frequent means of transportation to travel to park
Activities at Public Park
Jogging
Jogging, running, aerobics, tai chi
Workout
Doing exercises with tools/ machines
Petwalking
Walking with pets
Sightseeing
Sightseeing and talking rest without purpose
Talking 
Hanging out and talking with friends
Makefriend
Meeting new friends 
Photography
Taking photo and enjoying sceneries
Merit
Do merit-making activities such as collecting trash, releasing fish.
Time consumption
Time
Time spent each time
Services of Urban Green Space (5 points scale)
Food 
Provides foods (fruits, vegetation, honey)
Wood 
Provides wood
Herb 
Provides herbs for traditional treatments
Temperature
Helps to reduce temperature 
Airpollution
Reduces air pollutants (PM2.5, dust, smog)
Noise
Reduces noise from traffics and city life
CO2
Absorbs carbon dioxide (CO2)
Flood
Reduces urban flooding 
Groundwater
Reduces urban land erosion and improve ground water
Stormwind
Reduces wind speed during heavy rain and storm
Respiratory
Assists to reduce respiratory diseases (cough, allergic rhinitis, pneumonia)
Exercises
A place for outdoor activities to improve health (walking, exercises)
Culture
A place to keep and remains cultural values (historical sites, constructions, statues)
Beauty
Make a city more beautiful
Education
Be a good place to introduce children to nature
Society
Be a place for social activities 
Spirit
Be a place to release stress, and city life pressures
Habitat
Be a place for wildlife (Birds, squirrel, small animals, insects)
Biodiversity
Be a place for conserving different tree species 
SocialMedia
Be a place for social media???
Disservices of Urban Green Space (5 points scale)
Dirty
Be not clean (litter, bad management)
Crowded
Be often too crowded 
LackEquipments
Be not enough exercise machines
Noisy
Be annoyed by wild animals 
Vendors
Be too many street vendors
Unsafe
Be unsafe due to social crimes (theft, pickpocket, robber)
Damage
Tree root, branches could damage constructions
Danger
Be dangerous due to tree falling, bee sting could 
Dense
Be too dense with building constructions around
Challenges of Urban Green Space
Grownitself
No, it can grows itself 
Management
No, it always under management 
Urban_Pollution
Yes, It is damaged urbanization and pollution
Climatechange
Yes, it is damaged by climate change (high temperature, frequent storm)
Urban_CC
Yes, it is damaged by urbanization and climate change
Solution for Urban Green Space
Decrease
Decrease area for residential areas
Remain
Maintain the current urban green spaces
Increase
Increase the current area by finding land fund for new green spaces
Optimize
Optimize the current area by maintaining current area and increase green infrastructures (green roof, green wall, urban agriculture)
Influence in decision making
Donation
Willing to pay for USG usage 
DonationReason
Reason why the respondents do not donate
Decision
Decision affected by urban green space existence when buying a new real estate 
Respondent information 
Gender
Sexuality (Male/Female/Others)
Age
Age range 
Literacy
Educational levels 
Career
Professional career
Income
Income range 